Angular travel emptying valve

Abstract

The invention provides an angular travel emptying valve which is fixedly connected with a bottom opening flange of a tank body and comprises a valve body, a valve internal part and a valve cover, the valve cover is fixedly connected with the valve body, the valve internal part is located in an inner cavity formed by the valve cover and the valve body and can rotate in the inner cavity, and the rotation axis of the valve internal part penetrates through a flange flow channel; the valve cover is fixedly connected with the flange and comprises a sealing valve seat extending into a flange flow channel, and a first opening is formed in the sealing valve seat; the valve internal part comprises a cavity structure, the upper portion of the cavity structure is a sealing valve element extending into the flange flow channel, and a second opening is formed in the sealing valve element. The sealing valve element and the sealing valve seat are arranged in the flow channel of the flange, the opening overlapping area of the sealing valve seat and the sealing valve element is controlled to adjust closing and adjusting of the flange flow channel, the rotating axis of the valve internal part is kept to penetrate through the flange flow channel in the period, and therefore the driving device is changed to the end of the axis of the flow channel, and the radial space is reduced; and the valve is arranged between the driving device and the bottom of the tank body, so that the interference risk is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of discharge valves for tanks containing fluids, and in particular relates to an angular stroke discharge valve. Background Art

[0002] The existing kettle bottom angle stroke discharge valve has a valve trim line that is generally perpendicular to the flow channel at the kettle bottom flange, and a valve drive device is installed on this basis. At this time, the valve drive device is located on the side of the flow channel at the kettle bottom flange, occupying more radial space. In many application scenarios, for production process considerations, liquid accumulation should be avoided or reduced as much as possible, and the corresponding opening and closing parts should be as close to the reactor as possible. Since the valve drive device is located on the side of the flow channel at the kettle bottom flange and close to the bottom of the reactor and other tanks, in order to prevent mechanical interference, it should be as far away from the bottom of the reactor and other tanks as possible. However, because the valve drive device is coaxial with the rotation axis of the valve trim, it is impossible to simultaneously make the valve trim as close to the bottom of the kettle as possible to reduce liquid accumulation, and to make the axial distance between the valve drive device and the bottom flange of the reactor and other tanks as long as possible.

[0003] The improved form of the existing conventional kettle bottom angle stroke discharge valve deviates from the original rotation axis perpendicular to the flow channel by a certain angle (less than 45°), which is beneficial to increase the axial distance from the bottom flange of the reactor and other tanks, but it still cannot change the situation that the valve drive device is located on both sides of the flow channel axis, close to the bottom of the reactor and other tanks, has high radial space requirements, and is prone to axial interference. Although the original contradiction is alleviated at this time, increasing the distance from the bottom of the reactor and other tanks and reducing the radial space requirements have become a new contradiction. Summary of the invention

[0004] In view of the above technical problems, the present invention provides an angular stroke discharge valve, in which the sealing valve core of the valve trim and the sealing valve seat of the valve cover are arranged in the flow channel of the flange, and the overlapping area of ​​the openings on the sealing valve seat and the sealing valve core is controlled to adjust the closing and regulation of the flange flow channel, so that the axis of rotation of the valve trim coincides with or is slightly deviated from the axis of the flange flow channel, thereby moving the driving device of the valve trim from both sides of the flow channel axis to the end of the flow channel axis, thereby reducing the radial space, and there is no interference risk due to the valve between the driving device and the bottom of the tank body.

[0005] To achieve the above object, the technical solution of the present invention is:

[0006] An angular stroke discharge valve is fixedly connected to the bottom opening flange of a tank body, comprising a valve body, a valve trim and a valve cover, wherein the valve cover is fixedly connected to the valve body, the valve trim is located in an inner cavity formed by the valve cover and the valve body, and rotates in the inner cavity formed by the valve cover and the valve body, and the rotation axis of the valve trim passes through the flow channel of the flange;

[0007] The valve cover is fixedly connected to the flange, and the valve cover comprises a sealing valve seat extending into the flange flow channel, and the sealing valve seat is provided with at least one first opening for fluid circulation;

[0008] The valve trim comprises a cavity structure, the upper part of which is a sealing valve core matched with a sealing valve seat, the sealing valve core extends into the flow channel of the flange, and at least one second opening is provided on the sealing valve core, which can also be used for fluid circulation;

[0009] The valve inner part is rotated, and the sealing valve seat cooperates with the sealing valve core to control the overlapping area of ​​the first opening and the second opening, thereby realizing the switching of the flange flow channel and the adjustment of the flow area.

[0010] Preferably, a third opening is provided at a lower portion of the cavity structure, the valve body has a downstream flow passage, and the third opening is communicated with the downstream flow passage.

[0011] Preferably, the sealing valve seat and the sealing valve core have the same shape and can fit each other to achieve sealing. In order to achieve sealing, the sealing valve core is installed tightly fitting the sealing valve seat.

[0012] Preferably, the sealing valve seat and the sealing valve core are in the shape of a cone, a sphere, a plane or other shapes that can fit tightly and achieve sealing.

[0013] Preferably, the valve stem line of the valve trim coincides with the axis of the flange flow channel, or deviates slightly, but its valve stem line passes through the flange flow channel area. Preferably, the valve stem line of the valve trim coincides with the axis of the flange flow channel.

[0014] Preferably, the valve trim further includes a valve stem, and the cavity structure is fixedly connected to the valve stem.

[0015] Preferably, packing is arranged along the circumference of the valve stem to seal between the valve stem and the valve body.

[0016] Preferably, the lower part of the valve body is fixedly connected to a bracket, the bracket is connected to a driving device, the driving device is connected to a valve stem, the driving device is used to drive the valve internals to rotate, the driving device may be a manual or automatic driving device, and since the axis of the driving device is coaxial with the rotation axis of the valve stem, the driving device is located at the end of the rotation axis of the valve stem, and is separated from the tank body by the angular stroke discharge valve of the present invention.

[0017] Preferably, a packing pressure plate is provided between the valve body and the bracket along the axis of the valve stem, and the packing pressure plate is used to fix the packing.

[0018] Due to the adoption of the above technical solution, the present invention has the following advantages and positive effects compared with the prior art:

[0019] The angular stroke discharge valve of the present invention has a valve cover fixed to a flange at the bottom of a tank body containing fluid, and a valve internal component is arranged in a cavity formed by the valve cover and the valve body. The valve cover includes a sealing valve seat, and the valve internal component includes a sealing valve core. In order to reduce liquid accumulation as much as possible, the sealing valve seat and the sealing valve core are arranged in the flow channel of the flange, a first opening is provided on the sealing valve seat, and a second opening is provided on the sealing valve core. The valve internal component is rotated, and the first opening and the second opening can overlap, partially overlap, or not overlap through the cooperation of the sealing valve seat and the sealing valve core, thereby realizing the switching of the flange flow channel and the adjustment of the flow area, thereby realizing the switching of the bottom opening of the tank body containing fluid and the adjustment of the flow area. At the same time, in order to reduce the demand for radial space, the axis of rotation of the valve trim is located in the area of ​​the flange flow channel, so that the axis of rotation of the valve trim and the axis of the flange flow channel can be offset, skewed or overlapped, so that the drive device of the valve trim can be moved from the side of the existing flange flow channel axis at the bottom of the tank body to one end of the flange flow channel axis, away from the bottom of the tank body, thereby greatly reducing the demand for radial space at the bottom of the tank body by the discharge valve drive device (the drive device is the drive device of the valve trim). Since there is a valve between the drive device and the bottom of the tank body, there is no risk of interference under normal circumstances. This solves the two related contradictory requirements of "reducing liquid accumulation" and "increasing the distance between the drive device and the tank body" in conventional angular stroke discharge valves; it also solves the two related contradictory requirements of "reducing radial space requirements" and "increasing the distance between the drive device and the tank body" faced by the improved slash type discharge valve in conventional angular stroke discharge valves. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The structure of the angular stroke discharge valve of the embodiment of the present invention is shown in FIG. Figure 1 ;

[0021] Figure 2 The structure of the angular stroke discharge valve of the embodiment of the present invention is shown in FIG. Figure 2 ;

[0022] Figure 3 A sectional view of the front view of the angular stroke discharge valve according to an embodiment of the present invention;

[0023] Figure 4 It is a schematic diagram of the valve internal parts in the angular stroke discharge valve according to an embodiment of the present invention;

[0024] Figure 5 A cross-sectional view of a valve trim in an angular stroke discharge valve according to an embodiment of the present invention;

[0025] Figure 6 It is a schematic diagram of a front view of a valve cover in an angular stroke discharge valve according to an embodiment of the present invention;

[0026] Figure 7 The figure is a top view of the valve cover in the angular stroke discharge valve according to the embodiment of the present invention.

[0027] Explanation of the reference numerals: 1-tank body; 2-valve body; 201-downstream flow channel; 3-valve trim; 301-cavity structure; 302-valve stem; 303-sealing valve core; 304-second opening; 305-third opening; 4-valve cover; 401-sealing valve seat; 402-first opening; 5-bracket; 6-packing; 7-packing pressure plate; 8-flange. DETAILED DESCRIPTION

[0028] Since the drive device of the existing angular stroke discharge valve is located on the side of the flow channel of the bottom flange of the kettle, it occupies a lot of radial space. However, in many application scenarios, due to production process considerations, liquid accumulation should be avoided or reduced as much as possible, and the corresponding opening and closing parts should be as close to the reactor as possible. Since the drive device is located on the side of the flow channel of the bottom flange of the kettle and close to the bottom of the reactor and other tanks, in order to prevent mechanical interference, it should be as far away from the bottom of the reactor and other tanks as possible. Therefore, there is a contradiction between minimizing liquid accumulation and occupying radial space.

[0029] In response to this contradiction, the present invention proposes an angular stroke discharge valve, which not only reduces the demand of the driving device for the radial space at the bottom of the reactor, but also solves the two related contradictory demands of "reducing liquid accumulation" and "increasing the distance between the driving device and the reactor" in the conventional angular stroke discharge valve, and splits the two into independent demands, which can achieve the above two demands at the same time, making the angular stroke discharge valve of the present application more suitable for application at the bottom of tanks such as reactors with complex radial space.

[0030] The following is a further detailed description of an angular stroke discharge valve proposed by the present invention in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description.

[0031] See also Figure 1-7 , an angular stroke discharge valve, is fixedly connected to the bottom opening flange 8 of the tank body 1. The tank body 1 is a container for containing fluids, which can be closed or not completely closed, and sometimes also has a reaction container or a mixing function. It is often a pressure vessel, usually a reactor.

[0032] The angular stroke discharge valve includes a valve body 2, a valve trim 3 and a valve cover 4. The valve cover 4 is fixedly connected to the valve body 2. The valve trim 3 is located in an inner cavity formed by the valve trim 4 and the valve body 2 and is rotatably arranged in the inner cavity. The rotation axis of the valve trim 3 passes through the flow channel of the flange 8. The valve cover 4 is fixedly connected to the flange 8.

[0033] The valve body 2 is the outer part of the discharge valve, which is the main shell for bearing pressure and constructs the internal cavity of the discharge valve together with the valve cover 4; the valve cover 4 is the main part of the discharge valve, which is often coordinated with the valve body 2, used for bearing pressure and other functions, and constructs the internal cavity of the discharge valve together with the valve body 2; the valve trim 3 is a part inside the discharge valve used to control the flow of fluid, and can change its relative position under the drive of external force.

[0034] The valve cover 4 includes a sealing valve seat 401 extending into the flow channel of the flange 8, and at least one first opening 402 is provided on the cover body for fluid circulation;

[0035] The valve trim 3 includes a cavity structure 301, the upper part of the cavity structure 301 is a sealing valve core 303 that cooperates with the sealing valve seat 401, and at least one second opening 304 is provided on the sealing valve core 303, which can also be used for fluid circulation, and the sealing valve core 303 extends into the flow channel of the flange 8;

[0036] The valve trim 3 is rotated so that the sealing valve seat 401 cooperates with the sealing valve core 303 to control the overlapping area of ​​the first opening 402 and the second opening 304, thereby realizing the switching of the flow channel of the flange 8 and the adjustment of the flow area. When the valve trim 3 is rotated to the point where the first opening 402 and the second opening 304 overlap or partially overlap, the discharge valve opens, and the fluid inside the tank body 1 flows out through the flow channel of the flange 8 and the discharge valve; when the valve trim 3 is rotated to the point where the non-opening part of the sealing valve core 303 blocks the first opening 402, the discharge valve is closed, and the fluid inside the tank body 1 does not flow out.

[0037] Since the sealing valve seat 401 and the sealing valve core 303 are arranged inside the flow channel of the flange 8, the opening and closing of the discharge valve is controlled by controlling the rotation of the rotary valve trim 3, thereby controlling the overlap area of ​​the first opening 402 on the sealing valve seat 401 and the second opening 304 of the sealing valve core 303, so as to reduce the accumulation of liquid at the bottom of the tank body 1 as much as possible. At the same time, the axis of rotation of the valve trim 3 is located in the area of ​​the flow channel of the flange 8, and the axis of rotation of the valve trim 3 and the axis of the flow channel of the flange 8 can be offset, deflected or overlapped, and then the driving device of the valve trim 3 can be moved from the side of the axis of the flow channel of the flange 8 at the bottom of the existing tank body 1 to one end of the axis of the flow channel of the flange 8, away from the bottom of the tank body 1, thereby greatly reducing the demand of the discharge valve driving device for the radial space at the bottom of the tank body 1. Since there is a valve between the driving device and the bottom of the tank body 1, there is no interference risk under normal circumstances. Therefore, the solution of this embodiment can solve the contradiction between reducing liquid accumulation and occupying radial space.

[0038] The axis of rotation of the valve trim 3 is located in the area of ​​the flow channel of the flange 8. The axis of rotation of the valve trim 3 can be designed to coincide with or slightly deviate from the axis of the flow channel of the flange 8. Further preferably, the axis of rotation of the valve trim 3 coincides with the axis of the flow channel of the flange 8, and the drive device of the valve trim 3 is positioned at one end of the axis of the flow channel of the flange 8, away from the bottom of the tank body 1, so as to more effectively reduce the demand for radial space.

[0039] Preferably, the sealing valve seat 401 and the sealing valve core 303 have the same shape and can fit each other to achieve a sealed shape. The sealing valve core 303 is tightly fitted to the sealing valve seat 401 for sealing, and the sealing valve seat 401 cooperates with the sealing valve core 303 to seal. The shapes of the sealing valve seat 401 and the sealing valve core 303 can be conical, spherical, flat or other shapes that can fit tightly to achieve a sealed shape.

[0040] Preferably, the valve trim 3 further includes a valve stem 302, and the cavity structure 301 is fixedly connected to the valve stem 302. The cavity structure 301 and the valve stem 302 can be integrally provided or two components can be fixedly installed.

[0041] Preferably, a packing 6 is arranged along the circumference of the valve stem 302 for sealing between the valve stem 302 and the valve body 2 , and the packing 6 is usually graphite.

[0042] Preferably, the lower part of the valve body 2 is fixedly connected to the bracket 5, the bracket 5 is connected to the driving device, the driving device is connected to the valve stem 302, and the driving device is used to drive the valve inner part 3 to rotate.

[0043] Preferably, a packing pressure plate 7 is provided between the valve body 2 and the bracket 5 along the axis of the valve stem 302 , and the packing pressure plate 7 is used to fix the packing 6 .

[0044] Preferably, a third opening 305 is provided at the lower portion of the cavity structure 301 , the valve body 2 has a downstream flow channel 201 , and the third opening 305 is in communication with the downstream flow channel 201 .

[0045] In this embodiment, in order to reduce the accumulation of liquid at the bottom of the tank body, the sealing valve core 303 of the valve trim 3 and the sealing valve seat 401 of the valve cover 4 are both arranged in the flow channel of the flange 8. When the second opening 304 on the valve trim 3 overlaps or partially overlaps with the second opening 304 of the valve cover 4, the discharge valve is opened, and the fluid inside the tank body 1 flows through the valve trim 3 through the first opening 402 and the second opening 304 and flows into the downstream flow channel 201; when the valve trim 3 rotates to a certain angle, its second opening 304 completely faces the blocked part of the valve cover 4, and the first opening 402 of the valve cover 4 also completely faces the blocked part of the valve trim 3, the two are sealed, the flow channel is blocked, and the discharge valve is closed. In this way, the valve trim 3 can control the size of the overlap area between the valve cover 4 and the valve trim 3 by rotating, so as to realize the switching and regulation of the fluid inside the tank body 1. At the same time, the rotation axis of the valve trim 3 is located in the area of ​​the flange 8 flow channel, and the projection positions of the sealing valve seat 401 and the sealing valve core 303 on the plane of the flange 8 are within the range of the flow channel opening at the bottom of the tank body 1, so that the drive device is moved from the side of the axis of the flow channel of the flange 8 at the bottom of the tank body 1 to one end of the axis, thereby reducing the drive device's demand for the radial space at the bottom of the tank body 1; solving the two related contradictory requirements of "reducing liquid accumulation" and "increasing the distance between the drive device and the tank body 1" in the conventional angular stroke discharge valve, splitting the two into independent requirements, and achieving the above two requirements at the same time; solving the two related contradictory requirements of "reducing radial space requirements" and "increasing the distance between the drive device and the tank body 1" faced by the improved inclined rod discharge valve in the conventional angular stroke discharge valve, splitting the two into independent requirements, and achieving the above two requirements at the same time.

[0046] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they still fall within the protection scope of the present invention.

Claims

1. An angular stroke discharge valve, fixedly connected to the bottom opening flange of the tank body, characterized in that: The valve comprises a valve body, a valve trim and a valve cover, wherein the valve cover is fixedly connected to the valve body, the valve trim is located in an inner cavity formed by the valve cover and the valve body, and rotates in the inner cavity formed by the valve cover and the valve body, and the rotation axis of the valve trim passes through the flow channel of the flange; The valve cover is fixedly connected to the flange, and the valve cover comprises a sealing valve seat extending into the flange flow channel, and at least one first opening is provided on the sealing valve seat; The valve trim comprises a cavity structure, the upper part of the cavity structure is a sealing valve core, at least one second opening is arranged on the sealing valve core, and the sealing valve core extends into the flow channel of the flange; The valve inner part is rotated, and the sealing valve seat cooperates with the sealing valve core to control the overlapping area of ​​the first opening and the second opening, thereby realizing the switching of the flange flow channel and the adjustment of the flow area.

2. The angular stroke discharge valve according to claim 1, characterized in that: A third opening is formed at the lower part of the cavity structure, the valve body has a downstream flow passage, and the third opening is communicated with the downstream flow passage.

3. The angular stroke discharge valve according to claim 1, characterized in that: The sealing valve seat and the sealing valve core have shapes that can fit each other and achieve sealing. The sealing valve core is installed in contact with the sealing valve seat to achieve sealing.

4. The angular stroke discharge valve according to claim 3, characterized in that: The sealing valve seat and the sealing valve core are in the shape of a cone, a sphere or a plane.

5. The angular stroke discharge valve according to claim 1, characterized in that: The rotation axis of the valve trim coincides with the axis of the flange flow channel.

6. The angular stroke discharge valve according to claim 1 or 5, characterized in that: The valve trim also includes a valve stem, and the cavity structure is fixedly connected to the valve stem.

7. The angular stroke discharge valve according to claim 6, characterized in that: A packing is arranged along the circumference of the valve stem to seal between the valve stem and the valve body.

8. The angular stroke discharge valve according to claim 6, characterized in that: The lower part of the valve body is fixedly connected to a bracket, the bracket is connected to a driving device, the driving device is connected to a valve stem, and the driving device is used to drive the valve inner part to rotate.

9. The angular stroke discharge valve according to claim 6, characterized in that: A packing pressure plate is arranged between the valve body and the bracket along the axis of the valve stem, and the packing pressure plate is used to fix the packing.

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